问题
选择题
Mr. Smith graduated from college at the age of 23, and ___________ he has been working as a teacher in a middle school.
A.after that
B.from then on
C.from then
D.since then
答案
答案:C
Mr. Smith graduated from college at the age of 23, and ___________ he has been working as a teacher in a middle school.
A.after that
B.from then on
C.from then
D.since then
答案:C